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    <link rel="stylesheet" href="../editor/codestyles.css">
    <script src="../editor/codeeditor.js"></script>
	

    <style>
    canvas {position: absolute; left: 580px; top: 67px}
    </style>    
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<body style="">

<div id="buttons">
	<input type="submit" value="run" id="runIntro" onclick="slide.runCode();">
	<input type="submit" value="clear output" id="clearOutput" onclick="clearOutputBox();">
	<input type="submit" value="revert" id="reloadCode" onclick="location.reload();">
</div>

<canvas id="canvas" height="200" width="200"></canvas>
<script src="trafficlight.js"> </script>
<script src="button.js"> </script>
<script>



// currently unused
// exercise to make button set light to random color?
var toss = function () {
	return Math.random() > 0.5;
}
// return a function that when called randomly calls either f or g
var choose = function (f, g) {
	return function () {toss() ? f() : g();};
}

//return time in ms
var now = function () {return new Date().getTime();}

/*
// solution to exercise
t = TrafficLight();
b = Button();
b.onclick(function () {
	 console.log("your time was " + (now()-start) + "ms");
})
go = function () {
   console.log("click!"); t.green(); start = now(); 
}
setTimeout(go, Math.random() * 10000);
 console.log("get ready...");
*/

var avg = function (a) {
    var result = 0;
    a.forEach(function (e) {
        result += e;
    });
    return Math.floor(result / a.length);
	}

Array.prototype.zip = function (a, f) {
	var result = [];
	for (i=0; i < this.length; i++)
		result.push(f(this[i], a[i]))
	return result;
	}

var pos = function (x) {return x >= 0;}

var plus = function (a, b) {return a + b;}

var not = function (f) {return function (x) {return !f(x)}};

var max = function (a, b) {return Math.max(a, b);}


</script>

<textarea id="code" name="code" style="display: none;">t = TrafficLight(); b = Button(); es = [];
b.onclick(function () {
  t.red(); es.push(now());
  if (es.length == 6) report(); else start();
  });
start = function () {setTimeout(go, Math.random() * 3000)}
go = function () {t.green(); es.push(-now())};
report = function () {
   console.log("Average: " + 0 + "ms");
   console.log("Longest: " + 0 + "ms");
  };
start(); "Ready...";</textarea><div class="CodeMirror"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 8.99306px; left: 51.9907px;"><textarea style="position: absolute; padding: 0; width: 1px; height: 1em" wrap="off" autocorrect="off" autocapitalize="off"></textarea></div><div class="CodeMirror-scroll cm-s-default" tabindex="-1"><div style="position: relative; height: 273.76px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-gutter" style="height: 274px;"><div class="CodeMirror-gutter-text"><pre>&nbsp;1</pre><pre>2</pre><pre>3</pre><pre>4</pre><pre>5</pre><pre>6</pre><pre>7</pre><pre>8</pre><pre>9</pre><pre>10</pre><pre>11</pre><pre>12</pre></div></div><div class="CodeMirror-lines"><div style="position: relative; z-index: 0; outline: none; margin-left: 43px;"><div style="position: absolute; width: 100%; height: 0; overflow: hidden; visibility: hidden; outline: 5px auto none"></div><pre class="CodeMirror-cursor" style="top: 0px; left: 0px;">&nbsp;</pre><div style="position: relative; z-index: -1; display: none;"></div><div style=""><pre><span class="cm-variable">t</span> = <span class="cm-variable">TrafficLight</span>(); <span class="cm-variable">b</span> = <span class="cm-variable">Button</span>(); <span class="cm-variable">es</span> = [];</pre><pre><span class="cm-variable">b</span>.<span class="cm-property">onclick</span>(<span class="cm-keyword">function</span> () {</pre><pre>  <span class="cm-variable">t</span>.<span class="cm-property">red</span>(); <span class="cm-variable">es</span>.<span class="cm-property">push</span>(<span class="cm-variable">now</span>());</pre><pre>  <span class="cm-keyword">if</span> (<span class="cm-variable">es</span>.<span class="cm-property">length</span> == <span class="cm-number">6</span>) <span class="cm-variable">report</span>(); <span class="cm-keyword">else</span> <span class="cm-variable">start</span>();</pre><pre>  });</pre><pre><span class="cm-variable">start</span> = <span class="cm-keyword">function</span> () {<span class="cm-variable">setTimeout</span>(<span class="cm-variable">go</span>, <span class="cm-variable">Math</span>.<span class="cm-property">random</span>() * <span class="cm-number">3000</span>)}</pre><pre><span class="cm-variable">go</span> = <span class="cm-keyword">function</span> () {<span class="cm-variable">t</span>.<span class="cm-property">green</span>(); <span class="cm-variable">es</span>.<span class="cm-property">push</span>(-<span class="cm-variable">now</span>())};</pre><pre><span class="cm-variable">report</span> = <span class="cm-keyword">function</span> () {</pre><pre>  <span class="cm-variable"> console.log</span>(<span class="cm-string">"Average: "</span> + <span class="cm-number">0</span> + <span class="cm-string">"ms"</span>);</pre><pre>  <span class="cm-variable"> console.log</span>(<span class="cm-string">"Longest: "</span> + <span class="cm-number">0</span> + <span class="cm-string">"ms"</span>);</pre><pre>  };</pre><pre><span class="cm-variable">start</span>(); <span class="cm-string">"Ready..."</span>;</pre></div></div></div></div></div></div></div>
<div id="output"><i>Output</i></div>



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